1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Thepotemich [5.8K]
3 years ago
5

If a blood vessel has valves, it probably is a

Biology
1 answer:
Len [333]3 years ago
3 0
If it has valves then it is a vein.
You might be interested in
Plants inherit genes that enable them to produce chlorophyll, but this pigment is not produced unless the plants are exposed to
lozanna [386]
Plants inherit genes that enable them to produce chlorophyll, but this pigment is not produced unless the plants are exposed to light. this is an example of how the environment can influence on gene expression.  
<span>
Light has an important role in gene expression in plants by producing a number of light-induced changes. One of the examples of the light effects is that chlorophyll and the proteins required for assembling the photosynthetic apparatus are synthesized together with the enzymes needed for carbon fixation. Gene expression influenced by light includes the regulation at the level of transcription or, alternatively regulation of translation.</span>
6 0
3 years ago
Genetic drift _____.
Sergeeva-Olga [200]
Genetic drift happens when well-adapted organisms survive and reproduce more often than poorly-adapted organisms. <span>The statement that best sums up evolution is the change in a population through genetic variation over time. Natural selection may be through (1) differential reproduction, that is, not all organisms are able to reproduce to their fullest capacity because nature cannot simply sustain it and (2) acquire genes, that is heredity.</span>
5 0
3 years ago
Which term is closely related to the role of mitochondria in human cells? (need an answer right now!!!!!)
NemiM [27]

Answer:

the microbe Rickettsia prowazekii.

Explanation:

4 0
2 years ago
Which of the following are functions of the respiratory system?
kondor19780726 [428]
Absorbing CO2 into the blood is a part of the respiratory system!
7 0
3 years ago
In the rock cycle what forces can change sedimentary rock to igneous rock?
EastWind [94]
Heat/melting and pressure.
7 0
3 years ago
Other questions:
  • How do stem cells maintain their populations within tissues?
    15·1 answer
  • HELP ME !!!!HELP ME PLEASE
    9·1 answer
  • Which of the following chemical mediators is secreted onto the surface of the skin?
    13·1 answer
  • Half the distance between a wave's crest and trough . A. amplitude B. crest C. electromagnetic radiation D. frequency E. longitu
    9·2 answers
  • Can someone please help me with biology on chromosomes?
    6·2 answers
  • Explain how technology helps to compare and study genes and proteins.
    6·1 answer
  • In mead's model, which sequence correctly orders stages of the developing self answerimitation, play, game, generalized otherimi
    12·1 answer
  • Large reefs are thousands of years old. True or false identify if it is false
    15·2 answers
  • MCQ ...help me........​It's a last question
    14·1 answer
  • What is the difference between the tissue and the organ?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!